4 files changed, 79 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.lock b/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.lock
new file mode 100644
index 000000000..00d7b2182
--- /dev/null
+++ b/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "gui"
+version = "0.1.0"
+
diff --git a/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.toml b/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.toml
new file mode 100644
index 000000000..9b816e766
--- /dev/null
+++ b/src/doc/book/listings/ch17-oop/listing-17-09/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "gui"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/src/doc/book/listings/ch17-oop/listing-17-09/src/lib.rs b/src/doc/book/listings/ch17-oop/listing-17-09/src/lib.rs
new file mode 100644
index 000000000..960fee23d
--- /dev/null
+++ b/src/doc/book/listings/ch17-oop/listing-17-09/src/lib.rs
@@ -0,0 +1,27 @@
+pub trait Draw {
+    fn draw(&self);
+}
+
+pub struct Screen {
+    pub components: Vec<Box<dyn Draw>>,
+}
+
+impl Screen {
+    pub fn run(&self) {
+        for component in self.components.iter() {
+            component.draw();
+        }
+    }
+}
+
+pub struct Button {
+    pub width: u32,
+    pub height: u32,
+    pub label: String,
+}
+
+impl Draw for Button {
+    fn draw(&self) {
+        // code to actually draw a button
+    }
+}
diff --git a/src/doc/book/listings/ch17-oop/listing-17-09/src/main.rs b/src/doc/book/listings/ch17-oop/listing-17-09/src/main.rs
new file mode 100644
index 000000000..4eb13f6b7
--- /dev/null
+++ b/src/doc/book/listings/ch17-oop/listing-17-09/src/main.rs
@@ -0,0 +1,40 @@
+use gui::Draw;
+
+struct SelectBox {
+    width: u32,
+    height: u32,
+    options: Vec<String>,
+}
+
+impl Draw for SelectBox {
+    fn draw(&self) {
+        // code to actually draw a select box
+    }
+}
+
+// ANCHOR: here
+use gui::{Button, Screen};
+
+fn main() {
+    let screen = Screen {
+        components: vec![
+            Box::new(SelectBox {
+                width: 75,
+                height: 10,
+                options: vec![
+                    String::from("Yes"),
+                    String::from("Maybe"),
+                    String::from("No"),
+                ],
+            }),
+            Box::new(Button {
+                width: 50,
+                height: 10,
+                label: String::from("OK"),
+            }),
+        ],
+    };
+
+    screen.run();
+}
+// ANCHOR_END: here